$indesign folder for 64 and 32 bit

I'm trying to include both 64 and 32 builds of C++ plugin into zxp package. Here is my mxi configuration:

<macromedia-extension

        name="Plugin-Name"

        requires-restart="true"

        version="1.0.0">

    <author name="My-Name"/>

    <products>

        <product familyname="InDesign" version="9" required="true" />

    </products>

    <files>

        <!-- inDesign CC win 32 -->

        <file products="InDesign32" platform="win" minVersion="9" source="static/" destination="$indesign/Plug-Ins/My-Plugin"/>

        <file products="InDesign32" platform="win" minVersion="9" file-type="plugin" source="win/cc/x86/MyPlugin.pln" destination="$indesign/Plug-Ins/My-Plugin"/>

        <file products="InDesign32" platform="win" minVersion="9" source="win/cc/x86/(MyPlugin Resources)/" destination="$indesign/Plug-Ins/My-Plugin"/>

        <!-- inDesign CC win 64 -->

        <file products="InDesign64" platform="win" minVersion="9" source="static/" destination="$indesign/Plug-Ins/My-Plugin"/>

        <file products="InDesign64" platform="win" minVersion="9" file-type="plugin" source="win/cc/x64/MyPlugin.pln" destination="$indesign/Plug-Ins/My-Plugin"/>

        <file products="InDesign64" platform="win" minVersion="9" source="win/cc/x64/(MyPlugin Resources)/" destination="$indesign/Plug-Ins/My-Plugin"/>

        <!-- inDesign CC mac -->

        <file products="InDesign" platform="mac" minVersion="9" source="static/" destination="$indesign/Plug-Ins/My-Plugin"/>

        <file products="InDesign" platform="mac" file-type="plugin" minVersion="9" source="mac/cc/MyPlugin.InDesignPlugin" destination="$indesign/Plug-Ins/My-Plugin"/>

    </files>

</macromedia-extension>

I'm packing it with CS5 Extension Manager, as CC doesn't have an option to pack extension anymore. Package is being generated just fine.

When I'm trying to install the package with CC Extension Manager it throws an error, saying that DB could not be updated. But still, all files are copied as desired, except 32 bit inDesign has plugin from 64 bit version... Looks like $indesign folder is always mapped to 32 version and .pln file get's overwriten.

Is it possible to package 64 and 32 bit plugins into same zxp package? Should I use some specific package software (instead on Extension Manager CS5)?